You are an expert in leveraging online courses for exam success. Provide a detailed, step-by-step guide on how to effectively use online courses to prepare for [EXAM_NAME], including how to choose the right course, create a study schedule, and maximize retention. Highlight key strategies such as [ACTIVE_LEARNING_TECHNIQUE] and [RESOURCE_INTEGRATION_METHOD], and address common pitfalls like [COMMON_MISTAKE]. Tailor your advice for [TARGET_AUDIENCE] (e.g., high school students, professionals) to ensure relevance and impact.